I haven't bought a game at retail price from an Australian store for like 3 years now. Even on steam if something is regionally priced I usually get someone in the US to gift it to me. Problem is there's too many people who don't realise how badly we get ripped off and as long as they're buying games locally the prices aren't going to drop.
The DCUO subscription pricing really baffles me though. Can't you just buy a time card code online for the US price anyway?